title: Bone marrow examination for unexplained cytopenias reveals nonspecific findings in patients with collagen vascular disease.
abstract: BACKGROUND
  Collagen vascular diseases are frequently included in the differential diagnosis for unexplained cytopenias and often prompt a bone marrow biopsy in this patient population to exclude malignancy. Few large-scale studies have characterized the bone marrow morphology in patients with collagen vascular disease, and most are limited to systemic lupus erythematosus or rheumatoid arthritis.
  
  
  OBJECTIVE
  To identify morphologic and immunohistochemical abnormalities specific to each of a wide range of collagen vascular disease cases.
  
  
  METHODS
  We examined 102 cases of collagen vascular disease and 38 controls and evaluated the complete blood count, peripheral blood morphology, bone marrow morphology, as well as immunohistochemical staining, for numerous cell lineages.
  
  
  RESULTS
  Bone marrow findings, including abnormalities such as lymphoid aggregates, lipogranulomas, or abnormal localization of immature precursors, were not significantly different as compared to the control group.
  
  
  CONCLUSIONS
  Bone marrow examination in patients with collagen vascular disease with cytopenias seldom provides new information. Caution should be exercised in interpreting morphologic findings suggestive of myelodysplasia since these are of a reactive nature in up to 27% of patients with collagen vascular disease. In a cost-effective diagnostic strategy, successful utilization may favor postponing a bone marrow biopsy while a more standardized autoimmune diagnostic panel is being performed.
authors.affiliation: Department of Pathology and Laboratory Medicine, Henry Ford Hospital, Detroit, Michigan 48202, USA. khunt2@hfhs.org
authors.forename: Kristin E
authors.initials: KE
authors.lastname: Hunt
authors.forename: Mohamed E
authors.initials: ME
authors.lastname: Salama
authors.forename: Cordelia E
authors.initials: CE
authors.lastname: Sever
authors.forename: Kathryn
authors.initials: K
authors.lastname: Foucar
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001172:Arthritis, Rheumatoid / Q000378:metabolism / Q000473:pathology; D001327:Autoimmune Diseases / Q000150:complications / Q000378:metabolism / Q000473:pathology*; D015415:Biomarkers / Q000378:metabolism; D001854:Bone Marrow Cells / Q000378:metabolism / Q000473:pathology*; D001856:Bone Marrow Examination / Q000379:methods*; D003240:Connective Tissue Diseases / Q000150:complications / Q000378:metabolism / Q000473:pathology*; D003882:Dermatomyositis / Q000150:complications / Q000378:metabolism / Q000473:pathology; D005260:Female; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000150:complications / Q000378:metabolism / Q000473:pathology; D008297:Male; D008875:Middle Aged; D010198:Pancytopenia / Q000150:complications / Q000175:diagnosis* / Q000378:metabolism; D012595:Scleroderma, Systemic / Q000150:complications / Q000378:metabolism / Q000473:pathology; D056647:Systemic Vasculitis / Q000150:complications / Q000378:metabolism / Q000473:pathology*; D055815:Young Adult
chemical_list: D015415:Biomarkers